US3329958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial dielectric lens structure
Assignee: GTE Sylvania Inc
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Filing: 1964-06-11
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Granted: 1967-07-04
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Donald L Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/02; H01Q15/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
AN ARTIFICAL DIELECTRIC HAVING A PREDETERMINED REFRACTION CHARACTERISTIC FOR ELECTROMAGNETIC WAVES AT GIVEN FREQUENCIES COMPRISING, A PLURALITY OF STACKED MECHANICALLY INTERLOCKED LAYERS OF IDENTICAL DISHED FOAMED-PLASTIC MODULES WITH A PLURALITY OF MODULES IN EACH LAYER, EACH MODULE HAVING A WALL TRANSVERSE TO THE DIRECTION OF WAVE PROPAGATION AND A PLURALITY OF SUBSTANTIALLY IDENTICAL ELECTRICALLY CONDUCTIVE STRIPS ON SAID WALL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |